Genetic connectivity in Twospot flounder (Bothus robinsi) across the Gulf of Mexico, inferred with single nucleotide polymorphisms from larvae and adults

Larval genetic information influences populations’ pools, causing homogenization or structuration. So, knowing about adult and larval is essential to understand processes such as connectivity. The aims are evaluate Twospot flounder ( Bothus robinsi , a fish with high dispersal potential) pools’ diversity, test if the larvae tend mix display collective dispersal, compare between adults its We used ddRADSEQ genotype 1,034 single nucleotide polymorphic sites from B. sampled in waters Bay of Campeche eastern Gulf Mexico (GOM) on Florida’s continental shelf. Larvae were identified morphologically by DNA barcoding. estimated Fst-paired comparations, Principal Components Analysis (PCA), Discriminant Analyses (DAPC), Structure analysis trends. With software COLONY, we made sibship evaluation. observed no significant heterogeneity among regions (Fst p-values>0.05). PCA, DAPC, showed one cluster, indicating homogeneity. did not detect full-sibs half-sibs. linked results potential due long pelagic duration ocean dynamics transport all GOM shelf areas. These findings suggest that large enough produce connectivity subpopulations time spent pathways different subpopulations, panmictic population.